Ribbon shredder



FIG. 1 is front perspective view of a ribbon shredder showing my new design;

FIG. 2 is a side elevational view thereof, both side views appearing the same;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof, the rear view appearing the same; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a ribbon shredder, as shown and described. 